Waterproof self-lubricating bearing for propeller-shafts, &amp;c.



1. P. JOHNSON. WATERPROOF SELF LUBRICATING BEARING FOR PROPELLER-SHAFTS, (Sac. 1,153,624

APPLICATION FILED OCLZZ, I914.

Patented Sept. 14, 1915.

INVENTOR 7250/).

Arm/min JEREMIAH P. JOHNSON, OF DETROIT, MICHIGAN.

WATERPROOF SELF-LUBRICATING BEARING FOR PROPELLER-SHAFTS, &c.

Specification of Letters Patent.

Patented Sept. Ml, 19155.

Application filed October 22, 1914. Serial No. 868,024.

To all whom it may concern Be it known that I, JEREMIAH P. JOHN- SON, a citizen of the United States of America, residing at Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in IVater'proof Self-Lubricating Bea-rings for Propeller-Shafts, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to bearings for propeller shafts of boats and for similar uses where it is desirable to obtain a construction which is free from friction and is also liquid-tight.

The invention comprises the novel construction as hereinafter set forth.

In the drawings: Figure 1 is a sectional elevation showing the hearing as applied to the propeller shaft of a boat; Fig. 2 is a section partly in elevation through the bearmg.

A is the shaft, B is a housing for inclos- I ing the shaft and C is my improved bearing which, as shown, is applied to the outer end of the housing. casing having a portion 1) fitting the shaft and a recessed portion providing. a chamber surrounding the shaft. At the opposite end of this casing is a cap member E preferably having a threaded engagement F therewith, said member also bearing upon the shaft A and closing the recessed portion. Within the recess is arranged a sectional sleeve member G G having outwardly-extending flanges H H, the sleeve closely fitting the shaft and the flanges fitting the opposite ends of the recess in the casing. There is also a member I fitting the outer wall of the recess and having inwardly -extending flanges J and J adjacent to the flanges H and H. The construction is such that the parts may be assembled by slipping the sleeve members G G into the" opposite ends of the member I. and thereby inclosing an annular space which may be filled with a suitable plastic lubricant.

The joint between the sleeve sections G and G is preferably formed by tapering the end of one and flaring the end of the other, as shown at K, thereby forming a. restricted The bearing C comprises a then sleeved upon the shaft A and inserted in the recess in the member C. The cap E is then secured in position and will hold the inner parts from displacement. In operation the water which leaks through the cap member E will press against the lubricant in the recess within the inner members and by its pressure will fill the space between the shafts and the sleeves with the lubricant which will seal the joint. At the same time the shaft is free to revolve without the frictional resistance which is always introduced where a packing gland is employed.

IV hat I claim as my invention is 1 A shaft bearing, comprising a member having a portion bearing upon the shaft and a recessed portion, a detachable cap for closmg said recess and also bearmg upon said shaft. a sleeve within said recess having out-- wardly-extending flanges at the opposite ends thereof, and a cooperating member fitting the outer wall of the recess provided with inwardly-extending flanges, said members constituting a recess for containing the lubricant.

2. A shaft bearing, comprising a recessed member having a portion bearing upon the shaft, a cap for closing said recess and also bearing upon the shaft, and sections within said recess for lining the same and containing lubricant.

3. A shaft bearing, comprising a recessed member having a portion bearing on said shaft, a cap for closing the recess and also bearing upon the shaft, and an inner assembly comprising members respectively fitting the shaft and outer wall of the recess, having oppositely-extending overlapping flanges at their ends and the space within said members being filled with lubricant.

4:. A shaft bearing, comprising a recessed member having a portion bearing upon the space between said member and sleeves be- 10 sl1aft,a cap for closing said recess and also ing filled with lubricant: bearing upon the shaft, a pair of sleeves In testimony whereof I aflix my signature having tapiaring engagemeit with each in presence of two Witnesses.

other. an at tieir opposite en s outwardl 7 extending flanges for fitting Within the r e- JEREMIAH JOHNSON cess, and a member fitting the outer Wall of WVitnesses:

the recess having inwardly-extending flanges THOS. JOHNSON,

overlapping the flanges of said sleeves, the JOSEPH CHAMBERS. 

